Combustion synthesis of novel boron carbide

Harini, Revanna; Manikandan, E.; Anthonysamy, S.; Chandramouli, V.; Eswaramoorthy, D.

doi:10.1063/1.4791502

Cited by 6 publications

(1 citation statement)

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“…The XRD pattern of the films shown in Figure reveals the formation of orthorhombic BC, evidenced by the significant peaks around 20° and 28° (ICDD file no. 00‐026‐0232) . It is noted that the intensity of the peaks at 20° (0 2 1) and 28° (9 0 1) increases from 44 to 2459 and 157 to 29114, respectively, in the samples C3–C5.…”

Section: Resultsmentioning

confidence: 91%

Cost‐Effective Green Synthesis of Boron‐Rich Carbide Coatings for Infrared Windows and Night‐Vision Optics

Devi

Swapna

Sankararaman

2020

Physica Status Solidi (a)

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The increasing demand for infrared (IR) window materials for various applications in optical imaging systems necessitates the development of cost‐effective green techniques. Herein, the synthesis of refractory boron carbide (BC) using castor oil, as carbon precursor, and the preparation of IR transparent films by thermal vapor deposition technique is reported. Films are prepared with 1:3, 1:4, and 1:5 ratios of boric acid and castor oil, respectively. The X‐ray diffraction (XRD) and Fourier‐transform IR (FTIR) analyses reveal the structure of films prepared to be BC. The morphology of the films is analyzed by the atomic force microscopy (AFM) technique, and its dependence on precursor's ratio is also studied. The spectroscopic characterization by the ultraviolet–visible–near IR (UV–vis–NIR) transmittance study reveals the potential of the films for IR window applications. The bandgap energy of the BC films determined from the Tauc plot yields a value of 2.33 eV. The absorption coefficient, extinction coefficient, refractive index, dissipation factor, and optical conductivity are also studied from the reflectance and transmittance data.

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Section: Resultsmentioning

confidence: 91%